MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Transistor: Working

An 8 bit succ...

Question

An 8 bit successive approximation analog to digital converter has full scale reading of $2.55 V$ and its conversion time for an analog input of $1 V$ is 20 $μ s .$ The conversion time for a $2 V$ input will be

A

10 μ s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

20 μ s

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

40 μ s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

50 μ s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $20 μ s$
Conversion time of successive approximation ADC depends upon the number of bits only and not on the value of the voltage.

Suggest Corrections

thumbs-up

6

Similar questions

Q. A certain 8-bit successive approximation type analog to digital converter has full scale voltage of 2.65V. If the conversion time

V_{A} = 1.5 V i s 75 μ s

then the conversion time for

V_{A} = 2 V

is ____________

μ s

.

Q. An 8-bit counter type ADC has worst case conversion time equal to 0 times of that of an 8-bit successive approximation type ADC, if AND gate of counter type ADC is clocked with a

5 M H z

clock signal. This conversation time is used for an analog input of

2 V

of SAC type ADC. Then conversation time for a

4 V

Q. An 8-bit successive approximation type ADC has a resolution of 30 mV. The digital output for an analog input of 2.86 V is

Q. In an N bit flash ADC, the analog voltage is fed simultaneously to

2^{N} - 1

comparators. The output of the comparators is then encoded to a binary format using digital circuits. Assume that the analog voltage source

V_{i n}

(whose output is being converted to digital format) has a source resistance of 75

Ω

as shown in the circuit diagram below and the input capacitance of each comparator is 8 pF. The input must settle to an accuracy of 1/2 LSB even for a full scale input change for proper conversion. Assume that the time taken by the thermometer to binary encoder is negligible.

If the flash ADC has 8 bit resolution, which one of the following alternatives is closest to the maximum sampling rate ?

Q. A digital to analog converter has full scale ouptut of

4.2 V

. The converter has resolution close to

18 m V

, then bit size of digital to analog converter will be

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Transistor

PHYSICS

Watch in App

explore_more_icon

Explore more

Transistor: Working

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon